“The tunnel is a world-class piece of Sydney infrastructure…[we] are confident the tunnel is an attractive asset which will provide solid returns for the right buyer,” KordaMentha partner Martin Madden said in a statement.

Australian tollroads have long attracted investors due to their perceived stable returns, but have struggled to meet optimistic traffic forecasts.

KordaMentha is currently selling the Clem Jones Tunnel in Australia’s Queensland state, with final bids due Sept. 23.

For RBS, a sale of the CrossCity Tunnel marks its continued retreat from the Australian market. The U.K. lender is currently selling Axiom Education Victoria, a unit that maintains and manages 11 schools in Australia’s Victoria state.